How do I change the installer and master codes on a DSC Impassa?

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To change the installer code:

1. Enter programming. *8-Installer code
2. Go to section 006.
3. Enter a new 4 digit installer code. DO NOT LOSE OR FORGET THIS NUMBER! IT IS THE ONLY WAY INTO PROGRAMMING!
4. Press # to exit programming.

To change the master code:

1. Use *8-installer code to go into programming.
2. Enter 007.
3. Now enter a new 4 digit master code.
4. Press # to exit.